--%>
Assignment Help - homework help

Problem on work of compression

A diesel engine operates devoid of a spark plug by using the high-temperature gas produced throughout the compression stage to ignite the fuel. During a typical compression, pure air that is originally at 21 °C and 0.95 bar is reversibly and adiabatically compressed to 1/20 of its original(actual) volume by the piston, as shown in the figure below.

a) If air is assumed to obey the ideal gas equation of state, find out the pressure and temperature in the cylinder at the end of the compression. The constant-pressure heat capacity of air varies with temperature and is given by

Cp/R = 3.3 + 6x10-4

b) What is the work of compression in J/mol of air?

c) Is the ideal gas law a good approximation in this case? Why?

2455_ideal gas law.jpg

   Related Questions in Mechanical Engineering

  • Q : Define Mechanism Mechanism : The

    Mechanism: The mechanism is a system of moving parts which changes an input motion and force into the desired output force and motion.

    		•
  • Q : Mechatronics Define the tem

    Define the tem Mechatronics and what are its elements?

    		•
  • Q : Stop cooling-water flow in turbine

    Whether you stop cooling-water flow through steam condenser when the turbine is slopped?

    		•
  • Q : Convection Heat Transfer Please Solve

    Please Solve this problem Step by step, and the question is in the images.

    		•
  • Q : Define feasibility study Feasibility

    Feasibility study: In order to take wise investments in a market-place experiencing rising stages of risk, companies are turning to feasibility studies to find out if they must propose new products, services or commence a new business endeavor. The ma

    		•
  • Q : Problem on discharge head loss Water is

    Water is draining from the tank A to tank B. The elevation difference among the two tanks is 10 m. The pipe joining the two tanks has a sudden-expansion section as shown below. The cross-sectional area of the pipe from A is 8 cm2, and the area of the pipe f

    		•
  • Q : What is Cotter joint Cotter joint :

    Cotter joint: These kinds of joints are employed to connect two rods that are under compressive or tensile stress. The ends of rods are in the way of a socket and shaft which fit altogether and the cotter is driven into a slot which is common to both

    		•
  • Q : Formation of Cavitation Explain the

    Explain the reason behind formation of the Cavitation in the Centrifugal Pump and not in the Displacement Pump?

    		•
  • Q : What is carnot engine Explain the term

    Explain the term Carnot engine?

    		•
  • Q : Numerically controlled Mechatronics

    What do you mean by Numerically controlled Mechatronics and what are its components?

    		•